Drawing-in Machine

A drawing-in machine automates the labor-intensive process of threading individual warp yarns through heddle eyes and reed dents according to the specified draft pattern. The machine presents the warp sheet, separates and grips individual yarns, threads each through its designated heddle eye, inserts it into the correct reed dent, and repeats this sequence across the entire warp width—handling up to 400 cm working width and 8–28 harness frames.

Two primary technologies address different production needs. Automatic drawing-in machines perform fully automated threading at speeds of 100–200 ends per minute, ideal for new warp setups or complex draft patterns. Warp tying machines connect new warp ends to existing warp ends already threaded through the loom, operating at faster speeds of 300–600 ends per minute—the preferred method when the new warp uses the same draft as the previous one.

The productivity gains from drawing-in machines are substantial: significant labor savings, consistent quality without human error, faster loom changeover, and the ability to handle complex drafts that would be tedious or error-prone manually. These machines are essential in high-volume weaving operations, facilities with frequent style changes, production of complex weave patterns on jacquard or dobby looms, and technical textile manufacturing. The investment pays off quickly in operations where loom downtime for manual drawing-in would otherwise limit capacity.